Phonograph stop mechanism



- w. w. DEAN PHONOGRAPH STOP MECHANISM Filed April 15. 1922 sSheets-Sheet 1 HIS ATTORNEYS Oct. 16, 1923.

' w. w. DEAN PHQNOGRAPH STOP MECHANISM 3 Sheets-Sheet 2 Filed April-15,1922 INVEN TOR.

' WILLIAM W. DEAN H\S ATTORNEYS ,Oct. 16 1923.

W. W. DEAN PHONOGRAPH STOP MECHANISM Filed April 15 1922 3 Sheets-Sheet5 WILUAM W. DEAN INVENTOR.

ms ATTORNEYS To all whom may concern 'Pete ntedGct, 16, 1923.

iresfr time.

res a rier eerie s; p

ILLIAM w. been, or LOWELL, MASSACHUSETTS, assrenon'ro THE nsrloinnorELECTRIC COBFORA'IIOIL'OF NEW YORK, N. Y'.,.A CORPDRATION OF NEW YORK.

rnonoeanrrr s'ror mnonnnrsia.

I A lic tion filed April 15,

Be it known that I, l/VILLIAM W; DEAN, a citizen of the United States,residing at Lowell, in the county of Middlesex and State ofMassachusetts, have'invented cer ain new and useful Improvements inPhonograph Stop Mechanisms, of which thefollowingis a full, clear,concise, and exact description, such will enable others skilled in theart to which my invention appertains to make and use the same. p Z

' a ly invention relates to phonograph stop mechanisms, andparticularlyto such stop p auisni operable under the controlot the saidmechanisms as are known in this art as preset phonographstoprnechanisnis I It is an object of the present invention to proyide amechanism having an element adapted to be adjusted'prior to the playingof a phonograph record to a particular position in the path of theadvancing tone arm, and which element comprises an electrical switchcontrolling member, such 'element having a handle portion projectingabove the horizontal plane otthe tone" arnnand whlch'jhandle portion'may be grasped by the operator of thephonograph as for the purpose ofadjustment. 7

Another object of my invention'is to pro vide such an elementas abovereferred to which is entirely sel'f contained, and which comprises anelectrical switch and a switch i operating lever, same being enclosed inthe 7 body of the stop element, and which switch is protected from dustand moisture which otherwise might interfere withthe proper working ofthe switch contacts. V

Anotherobject of my invention is to proride such a stopelementcontaining an eleca trical stopping switch, and in which the switchcontacts are capable of ready access as for repair or adjustment, andwhich may be inexpensively manufactured and easily assembled, and whichmay be so made as to be presentable in appearance as well as efficientin operation when used.

Another object of my invention is toprovide such a stop element as'maybe mounted on the upper face of the phonograph driving mechanismenclosing casing "of the well I phonographs employing disc-records. j {j1 j i Another object of myinvention is toprovide'an electricallycontrolled automatically operated phonographfstopping mechanismcomprising an actuating electromagnet mal stopping position under thecontrol oi plate removed so as to ,trically controlled electroma.

1922'. Seria 1No .5 5 2,98 6.

adaptedl'to operate under the control ofth'e said switch, when the saidswitchis operated V at the termination of'a record which has beenplayed. v p

Another object of my invention-isto provide such an electricallyoperatedstop mech anisin which, with its enclosing. casting, is

so thin that it may be placednnder the I phonograph turn table on'theboard comprising av wall ofthe motor enclosing cabinet. V

Another object of my invention is to provide such anelectricallyopera-tedstop mechswitch, and which comprises a second'switch,

contacts when the operatorinoves the phonoi-ng lever isautoniaticallyrestoredto norgraph motor starting lever, and which startthe said firstswitch, and the said electromagnet. q I

Other objects of my invention and the invention itself willbe' moreapparent as the description of the embodiment thereof,

herein illustrated and described,-progresses,

- and which embodirnentis shown in the accompanying drawings forming apart of this specification; and in which drawings Fig. l shows'a topplanview of aphonograph mechanism emliiodying my invention. Fig. 2 showsa sideelevational View of the supporting board, and phono raph elementstogether with the was secured to the under side of the supporting boardof such a phonograph mechanism as illustrated in Fig. 1.

Fig. 3 shows a side elevation al view of the electrical'switch enclosingphonograph tone arm engaging stop element of my invention. Fig. 4 showsa top planpview of the said stop element shown in Fig. 3.

Fig.5 shows the stop element of Fig.3 in side elevation, but with theoutside cover expose the inner I operative switch parts. I o l I p iFig. Z6 shows a top plan view ofthe'elecv gnetically oper ated stopmechanism comprised in my inve1ition, but with the top cover platetherefor removed" so to expose the inner electrically con olled andcontrolling mechanism.

Fi J Y is a; sectionalviewtaken on. the line A-r thearrows shown for-thesaid line.

Fig. 5 shows a sectional View taken on the line B .l3 of Fig. 6 lookingin the direction oil the arrows indicated tor the said line.

Fig. 9 shows'an ele'vational viewv of the terminal block-comprised inthe apparatus of Fig. 6'. f

' Fig. 10 is a diagram of the'elect-rical circuits involved in theillustrated embodiment of my invention. I

Fig. 11 is a side elevational View of the apparatus of Fig. 6,'but withthe cover plate therefor incplace.

Fig. 12 shows an elevational View of the i stop element ofllig Syrewedfrom the direction of the approaching tone arm.

Referring nowto all ot the figures 1n which like parts are indicated bylike reference characters, atllis shown the top wall of a phonographmotor enclosing casing,

and which wall is commonly madeot wood and forms a supporting board forthe phonograph-motor 2iwlnch is attached to ts underside, and whichimotor, in the present embodiment of my invent-ion, is an'electricalmotor. 7 i v The electrical motor 2 is adaptcdto rotate the phonographmun-table by means of a turn-table shaitt +l supporting the saidturntable and rotated by the motor 2 through suitable gearing, notherein shown, but well known in the art-f The electrical circuits forthe electric motor Flare illustrated diagrammatically in Fig.

10 wherein at 5 are shown a pair of circuit 35' conductors leading froma source of electri cal current, not-herein shown, to the phonographmotor mechanism, the said electrical conductors 5 connecting in serialcircuit, the

field windings 6 and the armature 7 oi the motor 2,,and an electricalswitch contact set 8, said contact set when its contacts are closedbeing adapted to cause the energization of the said motor windings fromthe said source of current to operate the motor.

The electrical circuits shown in Fig, .10 comprisealso a branch circuitcomprising an electro-magnet 9 adapted, when energized,- to interruptthe circuit closedby the con- ,tactsS, and an electrical switchcomprising let in the phonograph stop pre-set member an outer 15,, thesaid member comprising casting of electrical nsulating material such asbakeli-te orfother cquii alent material for the purpose.

0f the nob 32,,or when pre-setting The stop element show-n in Figs. 3 t05 inclusive, comprises a base member 16, and an adjustablestop elementmember 15,-the said base member comprisinga bottom base portion 17 andupwardly extending flanges l8 and 19, the element being disposed be,-

' tween the iiianges 18 and 19 and secured there- 'to by a bolt 20passing through an opening 21 of the element 15, and an aligned open.ing in the flange 18 being screw threaded into the other flange member19; in this way the. element 15 frictionally, but rotatably held betweenthe two flanges of the base men'iber 16. The springs 11 and 12 carryingthe switch contacts 10 are secured by inaehine screws and 23 a wall ofthe enclo'singelement 15, each 01" said springs being-electricallyinsulated from the other.

Theswitchactnating spring 13 is snapped into place within a slot '25disposed within the chamber 14 ofthe element 15 andnear the bottom ofthe said chamber, the slot being so shaped and the spring '13 being sotermed that the spring 13' will be given a bias toward the wall 26 ofthe chamber 14; within the element 15.

The spring 18 carries near its free end a contact element 2'? ofinsulating material adapted'to Contact when'the spring 13 is deflectedinwardly with the end of the spring 11 so asto cause the electricalcontact 10 carried by the spring 11 to engage the electrical contact 10-carried by the spring 12 so as to ciosethe said contacts and establishan electricalcircuit between the circuit conductors 28 and 29 leading tothe springs 11 and 12 respectively. Y

The spring 13 carries near its free end outwardly extending flange 30which projects through a slot 31 in the wall 26 of the element 15. V Theelement 15 has anob handle end portion 32 adaptedto be manually graspedto rotate the element 1.5 about its supporting shaft, the bolt 20disposed through the opening 21 of the said element. i

The elem-cut 15 is relatively long and need only be rotated through asmall are in order to accommodate itself to any desired set position,orinoperatiye position. I am thus enabled to pivot the element 15 thatit will rotate in a yerticalplane and, be mounted on the supportingboard 1 oil phonographs varying widely in desiginand the element 15,moreover, so constructed, may be manually operated by the operatortaking held before starting a record willbethrown toward the tone'armmanually, and then the tone arm I arm again reaching the end-of-recordposi- C1011 will press the flange 30 of the sprlng l3 inwardly to fiethe said spring to cause lts insulating contact Q'Ztc forcethe contacts7 10 of springs Hand 12 together, thus closing as -circuit through th icontacts it for the phonograph stop, or tripping magnet 9'. The trippingmechanism comprising the inagnetQ is illustratedin F 6 to Q-inclu-Vsive, in considerable detail Referring to thesaid figures, the magnet 9is shown as being supported on the frames33 by machine screws 34 passingthrough turned over flange 35 of the base 33, and which screws 341- arescrew threaded in the core36 of the magnet 9, said core progecting fromthe end of the magnet 9 sufiiciently for the purpose,

, The other end of the core comprising the being pivoted at 39 on a rod40 secured to flange portion -12 thereof.

the base 33 at 41, and tore turned-over 'A rearwardly extending arm 43of the armature 38 is adapted to he moved to en'- gage a notched portlon4A of a starting and stop lever 45 which is pivoted at 46 on the saidcasting 33 in order to stop the phonograph motor whenever theelectro-magnet 9 being energized, attracts the armature 38; An electricswitch comprising a pair of normally opened contacts 8 is carried on thebase 33 resilient springs 4-8 and 49, carrying the contacts 8 beingmounted on a flange 50 of the base 33, the said flange being disposedatright angles to the said base, and the springs, beingsecured betweeninthrougha considerable angle about its pivot The pivot tfi consists ofa'rivet havir hodylof the lever member 45 that thecontacpad 59, may,in-the position assumed e lever 45, as shown in Fig; 6, engage with theflanged run 6 of the turn-table3; a

v section of the said flanged rim being shown H1 Fig.8 with the frictionpad 59 shown in rfrictional engagement therewith whereby the sa dturn-tahle. i v

flt will henoted that in such a position} the lever 453's disposed, atanflangle to a diameter of the turntablejzind in such a directionthatthe turn-table direction pad prevents the rotation ot'the Czirotation, when the turn -table rim 46 engages theipad 59gtends toincrease thisjangle so ---that abindinp; frictional"contact is hadbetween'thesaid pad and the/said 'inr The operation of the mechanism ofinvention ishriefiy as toll0ws- The operator ilacesa phonograph recon,on the turn-table; and after 'de lecting'the element 15 toward. thetone'farnn moves the tonearm inwardl toward the center of the i r Y crecordiuntil the reproduoer 66 hastalrentnat positlon whi'ch it wllllater assinn'e when it freachesthe end of therecord and the tone arm 67will have made contact with the con the said element to rotaterearwardly about sulating washers 15 by machine screws 52 its center ofrotation 21, and thenthe operpassing through openings in the, i saidator having completed-what is termed the washers and somewhat ,largeropenings in pie-setting operatiom manuallyrotates V the said springs,and through a clamping plate 53, the ends of the said screws being screwthreaded into the Said: flange 505 the end 54 of the spring- 49 which Iterm the actuating spring is disposed at an angle to the body of thespring and is adapted to engage the outer peripheral surface55 of a.roller 56 loosely and rotatably carried on the end 57 of the lever 45distant from the handle 58 or the lever handle. j

The handle 58 supported on the outer end of the lever 45 and projectingupwardly there-from carries on its inner upper end 60 f a frictioncontact element such as tlie felt pad '59, such padrbeing fitted tightlywithin a cylindrical recess Gliin the said handle 58.

' The lever 45 has its handle portion? errtending through an opening63in. the cast ing 33, said opening being provided by the omission of aportion ofthe 'flangedside members 6201? the'base83; the-said sidememhersprojecting upwardly from the said base. i r Y The '.o} nenin gg63is madesufliciently wide as to permit the lever at to 'be' rotated thelever 58 counterclockwise.

Thiscauses the disengagement of the triction contact pad 59 with theturn-table 6? thus permitting the; tnrntahle to rotate when the electricmotor 2 I motor 2 is started'hy the'movernent of the lever 58, sincesuch movement causes a camming of the actuatingcontact spring 49% therotatable roller 56 whose face 55 engages normally the turned end 5a ofthe said spring, so that the actuating spring is'nioved is started. The

to-jconta'ct closing: position wherein the coni tacts 8 are closed. Thecontacts 8 heingin the energizing circuit the motor 2, when closed,therefore connect the incoming; circult conductors 5 from the source o tenergizing cnrrentftothe saidwindings of the said motor, and the motoris thereby started.

' f 'The 'motorwill-operate atsuhst'antially a constant eed und er the acontrol otthe gov erningi apparatus indicated genera-lly'hy the numeral69 Fig; 10, and' the turntahle 3 being; freed from the'restr aint ofthefriction pad 59, w1ll he rotated by'the power otthe gsaldmotortransmitted to the tn'rn-table'hy its suitable reducing gear mechanismshown. The turn-table will continue to rer a pressure against the saidlever to force x in Fin. (3 whereinthe contact pad 539 pleted from thescarce ot current, and niaenct will attract the pad 59, tend to so movethe l tats and the spirallvgrooved record wil direct the tone arm towardthe center of the record; thetone arm rotatingclock-wise until itengages with the contact piece flt carried on the spring 13 oi theelement; 15,

and such engagement will flex the spring 1 5 its end of record playingposition to operate the said switch. I

2.111 a pre-set phonograph stop mechanism, the combination withaphonograph until the spring carried contacts are armat rearwardlvintending 'arn armature will be rotated COUEitcr-clOClUYL about" acenter 39, and will engage the notched portion 44' of the lever exertsame in a clockwise direction about its center as. and utter a rertainamount of levcr movement under the power of the armature 38. the poweroi the spring; ti will reini orce that appliedbv the armature mm 53 toaccelerate'the rate ot movement oi h said lever 58 to cause it to besnapped turn-table rim engaging position as sho 1 v Lih tionallv engagesthe rim 6 i. 1 l

Also as has been explained, the clocl rotation of the turn-table beforecomm to rest will. bvi'rictional cima nient with this ufOEHGlll' the'padwill make even'closer enna and a tighter contact wit turn-table, so thatthe turn-table will quickly be broughtto rest and held against movement.the motor circuit, having been interrupted bvthe breaking-'0'? thei-ontacts 8 upon toe clockwise rotation oit i e said h ver 45, v v

rlavino' thus described my invention in a specific embodiment, I amaware that numcrous and extensive departures nia'v be made from theembodiment herein illustrated an d described, but without departing;-

from the spirit of my invention I claim:

1. In-aJpre-setphonographstop mechanism, the combination with phonograph'starting lever, saidlever adapted to have normal and advanced'operativeposi ions phonograph turn-table, motor means to rotate the saidturn-table, said motor means starting lever, said lever adapted to havenormal and advanced operative positions, a phonograph turn-table, motormeans to rotate the said turn-table, said motor means being responsiveto the movement of the said lever from its normal to its advanced posi-"tion to rotate the'said turn-table, electromagnetic means adapted whenenergized to restore thesaid lever from its advanced to its normalposition, an electric switch controlling;- the energization of the saidelectro magnetic means and means responsive to the movementfoi thetonearm to substanh'the rim of the;

tiallvits end-o'f-record playing position to operate the said switch,said switch comprisinn a pairof normally open contacts, and an actuatinglever "torthe said contactsadapted tone arm,'and adjusting means for thesaid ctuatin i lever adapted to adjust the said ever to differentcontact closing positions in the path of the said tone arm. 3. Inapro-set phonograph stop mechanism, the combination witha phonographstart ng lever. said lever adapted to have normal and advanced operativepositions, a

phonograph turn-table,motor means to rotate the said turn-table,saidimotor means being responsive to the movement of the said lever"from its 3101111211 to its advanced position to rotate the saidturntable, electromagnetic means adapted whenenergized to restore thesaid lever from its advanced to its normal. po-

'on an electric switch controlling the ener gization of the saidelectromagnetic means,

said means responsive to the movement of the tone arm to substantiallyits end-of-record playing position to operate the said switch, a casingfor the'said switch enclosheingr responsive to the movement of the saidlever from its normal to its advanced posi tion to rotate the saidturn-table, electromagnetic'means adapted when energized to" restorethesaidlever from its advanced to its normal'position, an electricswitch con-- trolling the energization of the said electro magneticmeans, and means responsive to the -movement of the tone armto'substantially ing the same said casing comprising walls oi'insulatingmaterial, a base for supportlIlQiillQ- said casing, said casing beingrotatably secured to the said base, means for irictionally holding thesaid casting in any preset rotative posit-ion an actuating elementadapted to project through 'a wallof said casting and adapted to bedisposed in the path or the advancing phonographtone arm said actuatingelementwheu engaged hv the said "tone arm adapted to close the contactsof thesaid switch. p 7 r I I l, In a pre-set phonograph stop mechanism,the combination with a phonograph starting lever, sai d lever adapted tohavenor-- mal and advanced o erative iositions' a phonograph turn-tablemotor means to rotate the said turntable, said motor means beingresponsive to the movement of the said lever from its normal to'itsadvanced position to rotate the said turn-table, electromagnetio meansadapted when energizedto restore the to be disposed in the path of theadvancing said lever from its advanced to its normal position, anelectric switch controlling the energization of the saidelectro-magnetio means, and means responsive to the movement of the tonearm otojsubstantially ltSf end-of-record playing position to operate thesaid switch, said'lever in its normal position making frictionalengagement with the saidturn-table to trictionally 'holdyit againstrotation.

5. In a pre-set phonograph stop mechanism, the combination with aphonograph" starting lever, said-lever adapted to have non mal andadvanced operative positions, a phonograph turn-table, motor meanstorotate the said turn-table, Sflidll'lOtOf means being responsive to themovement of the saidlev'er from its normalto its'advanced position torotate the said turn-table, electro-inagnetic means adaptedwhenenergized to restore the said lever from its advanced to its normalposition, an electric switchco'ntrolling the energization of thesaidelectro-magnetic means, and means vresponsive to the movement of thetoneoarm to substantially its e-nd-of-rec ord playing positionto;operate the" said switch, aipair of normally open switch contactsadapted to begelosed responsive to the"- ITOOVGIIIBIlf/Of the said leverto motor starting position. I 4 '6. In a pre-set phonograph stop mocha:

nism,the combination with a phonograph starting lever,said lever aoaptedto have normal and advanced'operat ve positions' a phonographturn-table, motor means to ro-' tater the said turn-table, said motormeans be-' ing responsive to the movement of the said lever from itsnormal to its" advanced position to rotate the said turn-table,electro-mgafnetic means adapted when energized to restore the said leverfrom its advanced toits normal position,.an electric switch controlliiigthe energization of the said electro-magne tio means,

and means responsive'to the movement of the tone arm to substantiallyits 'end-of-record playing position to operate the said switch, saidlever in its normal position making frictional engagement with the saidturn-table to frictionally' hold it against rotation a pair of normallyopen switch contacts adapted to be closed responsive to the 'movement ofthe said lever to motor. startin position.- V

In a 'pre-set' phonograph stop mechanisrn, the combination with aphonograph. starting lever, said lever adapted to have nor mal andadvanced operative positions, a phonographturn-table, motor means to srotate the said turn-table, said motor meansbeing responsive to themovement of the said lever from its normal to its advancedposit on torotate thesaid turn-table, electro-magnetic means adapted when energizedtorestore the said lever from its advanced to itsnormal position, anelectric switch controlling the P 6 5 Sotative 'ener me I I I I meansresponsive to-the moveiiint oi the tone arm to substantially liZS'QIld",

tien the said electro-magnetic of recordplaying position to operate thesaidaswitc a casting for thesaid switchenosing the same, saideastingficomprising ails of insulating material, a basefor sup-j thesame casting, said; casting being tatablyseenred to the'said base, meansfor ctionallyholding thesaidoasting in any oosition, an actuating .ele-

ment adapted-to project through a walliof f gaged by the $5&i(ii10118'tlflnfldttptfid to close the, eontacts ot'the, said switch, saidlever inits normal positionmalring frictional engagement with'the saidturn table tofric tionaliy hol "against rotation, a pair. or" e normallyopen switch contacts adapted to fene saidcasting' and adapted to bedisposed 1 a :tn eypath otthe advancing phonograph tone arm, said-actuatng 'elementiwhen'en .1

he closed responsive to the movement of the s'aidlevei" to motorstarting position.

'8 In a pre-set phonograph stop-mechanism,;the {comb nation with aphonograph starting lever, said lever adapted-to have normal andadvanced operative positions,-

.phonogra'ph' "turn-table,- motor means to rotate the said turntable,said motor means bein res ionsive to the" movement of the" V ,-r. N: nsai lever from-1ts1normal toits advanced L I L i i I position o ro atethe said turn-table, elec: troonagnetrc means adapted when energized torestore the SttlClglGVfil fromits advanced to its normal position,anelectric switch 0011-. L'*oll1n. the ener ization of the said:electroo b operate the said switch, a spring associated Withthe saidstarting lever andiadapted to accelerate, its movement toward normal"inagnetic means, and means responsive tofl the movement ot the tone armto substan ,t all y itsendpf-record playing position to positiomzsaidspringoeing so disposed rela- Jtro-magnetic means adapted when energizedto restore the said lever from its advanced to ts normal. position, anelectric switch controll ng theenergization of the saidelectro-niagneticf-means, and means responsive to theinovement or the tonearm to substan- -tially its end-of-record playing position to operatethe said switch, a'zspring tending; to maintain lever in normal'positiomsaid spring when saidlever is movedto said advenced positionbeing adapted exert :i gmssureto maintain the solid lever in said otlneed position.

1min -zi'pre-set phonograph stop mechani'sm, the combination with ephonograph stsrtinglever, said lever adapted to have normal end advancedoperative positions, a V phonograph turn-t eble, motor means to rotatethesiiid t'liin-tsl)le,said mot rinezins being responi .ve to tliemovement of the said r lever from its normel'to its edvsneed posi- I,tion to r tats thesaidturntable, electrotrolling the energnormal andadvanced operative -,sziid lever from its normal to position to rotatethe magnetic inc irestorethe its normal la-opted when energized to ilever from advanced to position, on electric svvitch eon- :tion of thesaid electromagnetic means, and in i'espons ive to the movement o thetone arm to substan- 'tially its ond-oi-i'ecorcl playing position tooperate the said switch, and electrical motor elements for-the saidmotor, said switch eoniects being included in the energizntion ciroiiitof the said electrical motor elements.

11; in a preset phone ph stop, mesheism, the combination withiiphonogreph.

starting lever, said lever epted to hex-epositions, a giihonogrsphtorn-table; motor means to 'ota'te the mid. turn-table, sand motor mesbeing responsive to the movement-of the l enee'd tijo magnetic meansadapted when energized to restore the seid'lever from its advancedtofits normal position, on electric switch nontroll tro-magneoie means,and means responsive to theinoveinent of the tone arm to sub-i,'stsntmlly its end-of-reoord playing positionsaid tnrn tsble, elee' theenergizetionot the aid eleo 7 'iteh, spring associated .i er and adaptedto rate its movement toward normal on, said spring being so disposedreluo the lever that it will he ineffeo to tend to move said lever fromits fully winced record playing position, and electrical motorelementsifor the solid motor,

res'iiore the ssi'd lever from its advanced to 7 its normal position, anelectric switch eon-i trolling the energizetion of-the saidelectroinegnet oniezins, and means responsive to the movement of thetone arm to substantially its en'dpl-i'eoord the said sw tch, 'a springtending to 1n: .in teinjsaid' lever in normal-positicm suid. spring whensaid lever is moved'to said advanced i osition being adapted to exert :1pressure to maintain the said lever in'ssid ,i ments for the said motor,said switch contacts being included 'in the 'enelgizin circuit ofthesaid oleetrioal motor element.

Witness v-hereof, 'I have -hereunto signedmy name this Nth-day of April,1922.

VIM; W; DEAN.

"phonograph stop mocha led to playing position to operate 7 advanced'position, and electrical niotor'

